Service-Life Study of Polycarbonate Outdoors Using Python with Incomplete Data

Table 2

Monthly data of the pollutant factors, such as the concentration of sulfur dioxide and hydrogen chloride determined using the instantaneous method; the concentration of nitrogen dioxide, hydrogen sulfide, ammonia, sea salts, and sulfation rate determined using the continuous method; the pH, concentration of sulfate ions and chloride ions in the rain; and the water-soluble and non-water-soluble dust fall quantity in Wuhan, China, 2007.

Data of pollutant factors of Wuhan experimental station in 2007
Month	Instantaneous methods (mg/m)		Continuous methods (mg/100 cm^2/day)					Rainfall (mg/m^3)			Dustfall (g/m^2/month)
	Sulfur dioxide	Hydrogen chloride	Nitrogen dioxide	Hydrogen sulfide	Sulfation rate	Ammonia	Sea salts	pH	Sulfate ion	Chloridion	Water-soluble	Non-water-soluble
January	0.0795	0.0138	0.144	0.1153	0.0434	0.0057	0.0083	6.71	31278.05	1304.94	4.2258	3.3492
February	0.0204	0.0281	0.1443	0.1048	0.7399	0.0178	0.0074	6.51	15616.37	2207.12	4.6604	4.8903
March	0.0496	0.017	0.1767	0.0073	0.6159	0.0468	0.0071	5.6	16799.74	1354.72	6.521	3.0319
April	0.0149	0.0362	0.1317	0.1435	0.3321	0.07	0.0137	6.612	7823.14	—	3.5711	2.5987
May	0.024	0.0164	0.1327	0.1402	0.2875	0.128	0.0158	3.528	16485.26	2243.1	12.6885	12.6885
June	0.0256	—	0.1279	0.0806	0.1282	0.0751	0.013	6.409	7665.72	332.46	2.5339	4.5327
July	0.1324	0.0161	0.0908	0.0223	0.7752	0.1106	0.015	6.425	3999.09	1060.42	4.9648	2.08
August	0.046	0.0269	0.1051	0.0334	0.42	0.0972	0.0115	6.187	8149.1	962.9	3.9206	6.5422
September	0.0483	0.0166	0.1227	0.0335	0	0.0432	0.0078	6.051	12744.48	1098.18	1.7866	3.0268
October	0.089	0.0153	0.1327	0.0721	0.0846	0.042	0.0117	6.704	18227.64	1546.98	2.1519	4.5428
November	—	—	0.0791	0.0407	0.1981	0.0111	0.0079	5.967	23816.26	607.3	2.6715	3.5607
December	0.1281	0.0082	0.0792	0.1986	0.4736	0.0139	0.0064	—	—	839.54	1.1105	2.0397
Total	0.6578	0.1946	1.4669	0.9923	4.0985	0.6614	0.1256	69.7030	162604.8500	13557.6600	50.8066	52.8835
Mean	0.0598	0.0195	0.1222	0.0827	0.3415	0.0551	0.0105	6.3366	14782.2591	1232.5145	4.2339	4.4070